Improvement in padlocks



UNITED STATES JAMES XVM. LYON, OF BROOKLYN, NFV YORK.

IMPROVEMENT IN PADLOCKS.

Specification forming part of Lett-ers Patent No. 35,030, dated April 22, 1862.

To all whom it may concern:

Be it known that l, J AMES WILLIAM LYON, of the city of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Padlocks; and l do hereby declare that the following is a full and exact descriptionl thereof, reference being had to the annexed drawings, makinga part of this specification, and to the letters of reference thereon.

My said improvements are applicable chiefly to such snap-locks as lock both at the heel and front of the shackle.

The iirst part of my invention consists in combining with the shackle two separate and independent sets of tumbler-catches, one set to lock the heel and the other set to lock the front or staple of the shackle, the two sets being so arranged and so adapted to each other, substantial] y as hereinafter described, that both sets are released from the shackle by the direct action of the key lifting the several tumblers of each set in the usual manner of actuating tumblers by a key and without the employment of other intervening mechanism between the key and either end of the shackle than the tumbler-catches, which are each so constructed and so arranged and adapted to each other in the combination as to perform t-he function of a catch or bolt, a tumbler and a detector, the whole performing the office and affording the security of a double series of tumbler-catches.

liigure l of the drawings represents the position of the parts of the lock when locked; Fig. 2, the same parts unlocked and the shackle free to be thrown out bythe action of the spring.

Letters a, Fi l, 2, and 4.-, represents dogs or tulnbler-catches moving on a pin, b, and actuated by sprin c, so as to be thrown up in the way of the sweep of the projection d [from the heel oli' the shackle whenever the shackle is pressed into the lock for the purpose of locking it. The projection d from the heel of the shackle is also shown in Fig. 3.

Letter e represents the tumbler-catches, which lock the frontof the shackle. The tails or lifting parts of the tumbler-catches of each set lap each other, shown in the drawings, and are so arranged that their lower or lifting edges, which are operated upon by the key, are above the key-stump and in suitable tial features of the arrangement and adaptation of both sets of tumblers, above described, are retained, the difference being that both sets of tumblers hang on the same stump; but they both lap each other and both have the action of tumblers in contradistinction t0 the action of mere circular bolts or simple dogs, which are moved by hooking directly on the key or by connections which hook on the key.

The second part of my invention consist-s in providing against the release of the tumbler-catches from the heel of the shackle by the action of a key other than the proper key or a duplicate thereof by the relative arrangement of the grooves g in the dogs or tumblercatches a., with the pins or flanges 7i on the part d projecting from the heel of the shackle, whereby they act iu combination with each other as guards or detectors againstattempts to open the lock with a key or other instrument which will move the tumblers a to a greater or less distance than the proper key.

Fig. 2 shows the position of the grooves relatively to the iianges or pins on the projecting part of the heel of the shackle when un locked, the/ position of the gooove being such as to permit the movement of the shackle by the action of the spring.

Fig. (i shows a modification of this pin and groove-detector arrangement, so obvious to any one acquainted with the principles which govern the application of detectors to tumblers as to need no further explanation.

The third part of my invention consists in the relative arrangement of the projecting part d and the tails or detectorst' of the dogs e, whereby they act in combination with each other as guards or detectors against attempts to open. the lock without the proper key.

The drawings show the arrangement of the parts when locked and unlocked.

Letters 'i 'i represent tails or detectors on the tumbler-catches e, so arranged relatively to the projecting part of the heel of the shackle that if the tumbler-catches e are moved fart-her than is necessary to release them from the front of the shackle the tails or detectors are raised sufciently to impede the travel of the projecting part oi the heel oi the shackle.

Fig. 2 shows the position of the tailor detector t' relatively to the projecting part of the heel of the shackle When unlocked, the position of the end of the tail being such as to just clear the projecting part of the heel of the shackle when the dogs or tuinblerpatches e are released from the staple by the action of the key.

I do not Wish to be understood as claiming detectors in combination with either set of tumbler-catches, except, as above described, in combination With the projecting part ot' the heel of the shackle.

What I claim as my invention and improvement in padloeks is as follows, viz:

With each of them at a point intermediate be? tween their respective fulcra or pivots, and by raising them up release them from the shackle, as described. l

2. In combination, the grooves gin the dogs @,andthe iianges or pins on the project-ing partof the heel of the shackle, substantially as and for the purpose described.

3. In combination, the projecting' part of the heel of the shackle, and the tails or detectors of the dogs e, which take into the staple or front of the shackle, substantially as and for the purpose described.

JAS. WM. LYON. 

